Polypeptides as vitro active cell growth enhancing factors and m

Details Polypeptides as vitro active cell growth enhancing factors and m Polypeptides as vitro active cell growth enhancing factors and m

1973-04-30

1976-04-27

Rosen, Sam

Textiles: fiber preparation

195 17, C12B 312, C12B 314

Patent

active

039532909

ABSTRACT:
Disclosed are in vitro active cell growth factors that stimulate deoxyribonucleic acid synthesis in the cells, are polypeptide in chemical structure, having a molecular weight range of from 4,000 to 6,000 and an isoelectric range of from pH 4.3 to 5.3, are inert to about 72% aqueous ethanol containing by volume about 0.047% of concentrated hydrochloric acid, soluble in and precipitated from such acid aqueous ethanol solution by admixing in it 3.5 times its volume of a mixture of five parts of acetone with three parts of ethanol, and are soluble in about twice their weight of 20% formic acid.

REFERENCES:
patent: 3122476 (1964-02-01), Gaeta
patent: 3128228 (1964-04-01), Michl
patent: 3429867 (1969-02-01), Bozicevich
Willmer, Cells & Tissues in Culture, Vol. 1 (1965), pp. 291-292.

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